"So far, no case for any epidemic has been recorded among the pilgrims, especially the coronavirus," local media today quoted Health Minister Abdullah al-Rabia as saying.
The MERS virus has already claimed 58 lives worldwide, with the greatest number of deaths from the respiratory disease -- 49 -- in Saudi Arabia itself.
"The ministry has put in place very strict measures this year," Al-Riyadh daily cited the health minister as saying.
Rabaia said up to 600 public health employees wearing face masks were deployed at the Jeddah international airport to screen arriving pilgrims and ensure they had the necessary vaccinations.
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The World Health Organisation said on Friday that the number of MERS infections worldwide has risen to 136, after Saudi Arabia confirmed six new cases.
The fact that the kingdom accounts for the overwhelming majority of cases has raised concerns about the hajj pilgrimage to Mecca, Islam's holiest site.
However, the authorities have said they are optimistic that the hajj will pass off without any outbreak, given that Muslims also go on lower-level pilgrimages at other times and there has been no mass spread of MERS.
Riyadh has, however, urged the elderly and chronically ill to avoid the hajj. Authorities have also advised pilgrims to wear face masks.
Experts are struggling to understand MERS, for which there is still no vaccine.
Like SARS, MERS is believed to have jumped from animals to humans. It shares the former's flu-like symptoms, but differs by also causing kidney failure.